Webb has produced the highest-resolution wide-area dark-matter map yet—more than twice as sharp as Hubble’s earlier view—using distortions in roughly 250,000 galaxies to expose previously unresolved clumps and filaments within a field containing nearly 800,000 galaxies.

Webb turned weak distortions in roughly 250,000 usable galaxy shapes into a one-arcminute map of the dark-dominated mass threading the COSMOS field. The post Webb has produced the highest-resolution wide-area dark-matter map yet—more than t…

Summary from SpaceDaily.

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1. SpaceDaily 25 Aug
   Webb has produced the highest-resolution wide-area dark-matter map yet—more than twice as sharp as Hubble’s earlier view—using distortions in roughly 250,000 galaxies to expose previously unresolved clumps and filaments within a field containing nearly 800,000 galaxies. ↗